<html>
<body style="background-color:black;color:white;text-align: center;">
<?php
$x = "hello world";
$y = "what a nice day!";
global $z;
$z = "<br>";
echo $x;
echo $z;
echo $y;
echo $z;
echo strlen($x);
echo $z;
echo strlen($y);
echo $z;
echo $x." ".$y;
echo $z;
echo strpos($y,"nice");
echo $z;
?>
<?php
echo $_SERVER['PHP_SELF'];
echo "<br>";
echo $_SERVER['GATEWAY_INTERFACE'];
echo "<br>";
echo $_SERVER['SERVER_ADDR'];
echo $z;
echo $_SERVER['HTTP_USER_AGENT'];
echo "<br>";
echo $_SERVER['SCRIPT_NAME'];
?>
</body>
</html>

